Fire-box for boilers.



J. M. MOCLELLON.

FIRE BOX FOR BOILERS.

APPLICATION FILED OUT. 1, 1909.

1,1 1 1 ,266, Patented Sept. 22, 191i 4 SHEETS-SHEET 1.

Fig, 2.

Fig.1.

, M I v witnessas C Inventor bfi g Jams m. mablellon WWW-WM y rm ttya THE NORRIS PETERS CO4. PHOTO-LITHQ, WASHINGTUN- D. C.

'J. M. MQGLELLON.

FIRE BOX FOR BOILERS.

APPLICATION FILED OUT. 1. 1909.

1, 1 1 1 ,266. Patented se t. 22, 1914.

4 SHEETS-SHEET 2.

witnesses: Inventor /WXDJL a James WZJflaGZeZZ/on mead/v41 3W 7 5% attzys.

THE KORR|$ PETERS CO. PHOTU-LITHQ. WASHINGTON. D. C

J. M. MQGLELLON. FIRE BOX FOR BOILERS.

APPLIOATION FILED 00121, 1909.

1,1 11 ,266, Patented Sept. 22, 1914 4)SHEETS-SHEET 3.

THE NORRIS PETERS cO.. PHOT0-LITHD.. WASHINGMN, n

J. M. MGCLELLON.

FIRE BOX FOR BOILERS.

APPLICATION FILED OCT. 1, 1909.

. 1 1 1 1 266 Patented Sept. 22, 19M

4 SHEETSSHEET 4.

N N a Q 3 Q p Q i witnesses Inv entov":

5M4. James m. mablellon @oMfiiYG/VVM 27y f 643%:

awj s.

THE NORRJS PETERS 00.. PHOTO-LITHO, WAGHINGYDN. D. c.

p JA vrns Mi. .MeoLELnoir} or nv'nnnrr, MASSACHUSETTS.

FIRE BQXJ ron, Bernese.

T oaZZ tvhom it may concern: I Be it known that I JAIMEs M. MOCLELLONI,

a citizen of the United'States, and a resident,

of Everett, in the county of MiddleseX and Commonwealth of Massachusetts, have in-f'. ventedan Improvement in FEB-BOXES for Boilers, of which thefollowing description, inconnection with the accompanying drawingsiii s a specification, like letters on the drawings representing like parts. T. 7

My invention relates tov fire-boxes for 'bOllr.

ers and more particularly to fireboxes of the] locomotive" type. The character of invention may-"be best understood by reference to the following description ofan illustrative embodim'ent thereof shownlin the accompanying drawings wherein? j i Figure 1 is a front'ele'vation of a lo'como tive fire-boX embodying my invention Fig. 2 is a verticalsectionltaken on line 2+2 of Fig; 1; Fig; 3 is a transverse vertical section through the fire-box; Fig. 4 is a verticalsec tion takeno'n line 4 4 of Fig. 3 ;Fig*. 5 is a horizontal section taken on line 5 5 of'iFig. 1; Fig. 6 is a vertical section taken on' line" 6 6 of Fig. 3; Fig; 7 is a section taken on line/7f? of Fig.6; Fig. 8 is asection-taken on'linei8 8 of Fig. 8 and F159 is a sectiontalien "on line 9 9 of Fig."1*,jl00klng upward.

Referring ,to "the drawing, the tire-box herein shown as embodying my invention is illustrated in connection with-a boller ofthe locomotive type, a portion of a locomotive cab ,1 (Fig. 1) and the barrel (Figs, 3, 4:

and 9) ofth'e boiler-being shown.

I 3) each comprising in turn a plurality "of: open sided, unitary sections 7, arranged transverselyto the length of the fire-box;

To provide ,a wall which 'will be .in eXtensible and stable as a whole and at-. the same tiniebe of sufficient localiior unit flexibility and expansibilityto expand and contract in response to variations in temperature without buckling, stress ng or weakening, each of the wall sections ls made to present a fie'xion side or portion 8 conveniently curved,"

bulged or converted incross-sectional shape at the inner or fire-side of the wall. The

adjoining or adjacent sides of the sections maybe flattened and be provided with means substantially,throughout the lengths of the sec i nst' e u e-seid a tened side's again t tend to cause said side to assume.

s ifi n of Letters li ent Patented sept. 22, 1914., I ApplicationfiledOctober 1,1909. Seria1No.520,556.

distortion movement'in the direction .of-the length of the series and consequent length {en ng of the seriesas .a whole and to localize the, expansion to the individual sectiona This may conveniently be done by riveting or otherwise securing the adjacent sides tr said sections together. To localize or restrictthe flexion to the flexion portions-of the sections the latter. are herein securedto gether by two vertical. rows of rivets wholly ,within the sections and respectively adjacent the fire-box and the interior sides of the wall. To cover the open sides, of said sections a cover sheet 10 preferably common to ;-a plurality of'said sections may be riveted or.

otherwisesecured toiinturned flanges 13 pm; j

j ec'ting from the 'sidesofeach sectlon.

It is well known that pressure in a con .tainer tends to cause the walls thereof to assumea shape of circular cr0sssect1on-; By

my invention the side of each section facing the interior of the 1 fire-box (the side which is subjected to thehigh'est heat) may be con lvexed or curved to havetheshape which the v pressure of the steam in the section Would Asa resuit, the pressure of the steam does not tend toidistort. said side but, on the contrary,

"tends to maintain it in it's original shape.

Where the adjoining sides of contiguous.

sections are riveted together, substantially throughout their lengths as described or- ;otherwise secured against extension in the direction of thelength of the series the pressure tending to distort the sides of the sections is rendered inefi'ective. Herein this 1s accomplished by the pressure of the sides of the next adjoining section and as a result tends to maintain the flattened contiguous sides in intimate" contact; The adjoining sldes are not self-sustalnlng as are the con-3 veXed'sides referred to, but rely for support:

on their supporting means,'herein constitutother thereby to obtain the counteracting effect of one on another for mutual nonextensive support and structural stability; i

While I have shown herein each unitary section as ,comprising'integral or seamless construction, itwill be understood"that my. invention includes any unitary section which isoomplete in itself. j 7 i v The fieXion-si'ded unitary sections describedare each transversely responsive to set that is, in the direction of the thickmg, also, they means for securingfone to an-j'.

ness of thewall and may individually assume a change of shape withoutextension or deformation of the wall as a whole. The

adjoining sides of the sections securedto-- gether constitute staying members for. the outer fiexion sides of the wall presenting a construction which is free from ob ectlon- 'ablejoints andliability of leakageand of great strength throughout. Extension of i the sections in the-direction of the length of s the series is further prevented by the cover sheet common to said sections and securely connected thereto. I

Walls suclras described above present simple construction of great strength, haying no rivets exposed to'the fire. By the curved or bulged sides of the sectlons the walls are rendered flexible and expansible throughout and particularly on their sides, facing the interior of the fire-box where the V greatest stress occurs from thetemperature I high as desired.

variationswithin thefire-box. p .T o permit a free circulation through the walls the sections may be connected in any suitable manner as by nipples which may be BXPanded into the sides of the sections making a tight joint around said nipples.

Herein two nipples adjacent the lower ends of .the sections are shown, but it will be understood that the nipples may extend as To provide mud-chambers at the bases of the walls through which water may circulate from the barrel of the boiler referred to,

-:-the; cover plate or sheet 10 of each wall may b'efextended below the wall as at 16 (Fig. 7); and be riveted or otherwise secured to one v side of a mud-ring 17, herein of channel shape, the legs 18 of the channel extending downwardly away from the wall sections to isolate its rivets from the interiors of the I latten 'Said ring extends the length of the wall and has its opposite side secured to the sections by a suitable connecting strip 19 extending the length of the wall, said sections being suitably flattened as at 20 to receive said strip without leakage between the ad olning sectlons. Toeffect acommunlcation between the wall sections at their bases with out alteration or weakening of. the sections. the .web of the channel mud-ring may be i bent vor formed to present a gutter or groove.

21 beneath said sections to permit a free fiow of water along its length, the gravitation toward the center of the gutter preventing the accumulation of sediment on the top surface of the mud-ring at the sides of the mud-chamber. The mud-chambers may be enlarged, if desiredpby removing portions of the lowerends of the sides of the adjoim ing sections to leave openings 22 above said gutter. These mud-chambers are preferably inclined, from the rear to the .front of the fire-box(Figs. 1 and 6) to permit any sediment. scale or other accumulation to gravi 37 (Fig. 2). municate through nipples 39 in the end side wall sections 29 and theadjoining end sheet 24. The top of the endwall is closed in a tate to the front of the fire-box {and there be flushedjout. .This inclination may also con for'in 'to the inclination of thegrate (not shown) and atf the same time give proper clearance to. the locomotive driving or trailing wheel's-Z v Having described the side walls I. will now describe the rear or fire-door end wall. This wall (Figs. 1'andi5) herein comprisesspaced l sheets 24 and 25 which may be stayed'in any suitable manner as byusual stay bolts 27; Thegends ofthis wall maybe joined toadja cent ends of, the side walls by riveting. the inner sheet to the end face of the adjoining side wall sections 29. Thespace between the sheets at the ends of therearwall vmay-he closedby long fiangesfilon the-inner sheet 24 said flanges being bent substantially at right angles "to the plane of, the inner sheet and extended away from'the interior ofthe fire-boxto overlap shorter flanges 33 onand similarly directed from the outer sheet 25. The side wallcover sheets 10 referredto may be extended beyond the end sections of the side walls as at 34 and. be riveted or otherwise secured to one or both of said; flanges as desired. Herein said sheets e'x-g tend s'ubstantiallyto the ends of saidflanges and the same rivets 35iserve to unite the flanges together andto said sheets. Theend wall be closed atk-its lower. end by a suitable channel or other shapedmud-ring The side and end walls commanner ,similarito thatdescribed for the ends of said wall by a longaflange .41 (Figs; l and 2) herein constituting a continuationof the long-flanges 31 at the ends of the wall, said flange 41 curving gradually fronithe;

side-walls and extending across the spajce'at the upper end of the front wall to overlap a similarly directed shorter flange .43. pro jecting" from the; outer [sheet 25.- These flanges (not only cover the space between the tops of the walls butalso constitute bearing its supports for a plurality of drumsdu-compris ng the crown of the fire-box "To this end said flanges are curved'orshaped to conform tofa portion of the .contourof the unples 51, the latter being entered through and expanded into said long flanges and; drums.

47 (the outer plates only being shown her'e- Ian The drums are provided with suitable heads 45 having man-holes 52 which may be closed by the usual cap-plates 53. The fire-door. Opening 54 (Figsl and 2) is formed in said end wall by extending a long flange 57 from the inner sheet24 to and overlapping a similarly directed short flange 59 onsaidouter: sheet 25, said fianges being formed to give vthe shape of opening desired.

.The opposite or front 'ends oi /the overhead drumsreferred to are secured to a tube sheet 61 (Figs; 4: and '9) at thej irontofthe fire box,-the central top. drum being entered through an opening. in said sheet .and is riveted or otherwise secured to a flange 6? projecting from said sheet away from the interior of the firebox. The' side drums have'at their ends inturned flanges 64: which are riveted or otherwise securedto the fireside of said tube sheet 61. By this construction the drums are eiiectively secured and supported and there are no rivets exposed to thefire. Furthermorefany oneof the drums may be readily removed for replacement or repair without disturbing the others. i

The tube sheet 61 (Figs l and 9 is flanged atits topand sides and is formed to conform to the front outline of the firebox as determined by the upper portion of the barrel 3 and the firebox side walls 5 (Fig; 3). The upper portion of the tube sheet flange 65 is riveted or otherwise secured to the adjacent portion of said barrel -66 and the side portions of said flange are riveted to portions of a throat sheet 67 whic'h arefo'rmed and bent to overlap said;

flange 65. This throat sheet isalso riveted to the under side'68 of the barrel 3, which-is cut away as at 69t0 provide forjthe spread of the barrel throat 70 beneath the boiler directly in front of the fire-box. The bot-- tom of the throat may beclosed by a suit:

able 'm'ud-ring Tl-which is riveted to said tube" sheet and throat sheet as shown in;

Fig. 4. The 'front sections (Fig. adjoin I ingthe tube sheet may be riveted "or other wise secured thereto. Water may be introduced from the barrel 13 through said throat into the'mud chamber's of the side walls 5 through suitable openings or nipples 15*- which may be expanded .into the sides of said front sections and said tube sheet.

The side walls may be inclined or curved somewhat toward each other to bring the tops of their sections into'positions to abut against the; sides of the outer drums, said" tops. being secured to the latter by closing cups 73 which may be riveted, welded or otherwise secured into said sections and to said drums. Water and steam rising in said. side walls are permitted to enter said drums through openings or nipples '7 5 the latter being expanded into said cups and drums.

throughout.

my invention are provided side walls each comprising unobstructed: sections of Y greatfiexibility andstrength', having no stay bolts whatever and no rivets exposed to the :fire. 'The'side wall mud-chambers do not weakenthewalls but, on the contrary,- by extending the length of the walls and unitm thesections together contribute substan- -.tially to their strength.

The long flange of the theouter sheet serves both to close the top of the wall and to effectively unite the overhead drums thereto with very few jointsand rivets. v i I be obvious that the firebox described above presents a construction which It will is extremely simple yet is strong and durable.

It will be understood that my invention is lnot limited to the particular embodiment shownherein, but that various modifications may be made without departingfrom the spirit and scope of my invention.

Claims.

1. In a boiler the combination of a series.-

of upright, unitary fiexion sections," each having an open side; a. chamber at their upper ends with wh ich said sections communicate and are connected; cover means secured tosaid sections and closing their open sides; and securing means for holding adjacent sides of said sections against distortion movement in the direction of the length of the series thereby to localize the expansion to individual sections.

2. -In a boiler the comb'nation of a series of upright, unitary wall sections, each having v an open side, said sections being respectively self-sustaimng and llldlvldllally expansible transversely of said series; cover means common to the. sections for closing thelr open sides; and securing means for holding adjacent sides of said sections against distortion movement in the direction of the length'of the series thereby to localize j'theexpansion to individual section's- 3;; In an apparatus of the class described, the combination of a series of upright, unitary wall sections, eachhaving an open side; and cover sheetmeanssecuredto said sections and closing their open sides, said sections being respectively self-sustaining and individually ex aansible transversely of said series. a In an apparatus of the class described,

the combination of a series of upright,

unitary flexion sections, each having an open side; means to secure adjacent sides of said sections togetherg tafnd cover means secured to said sections and closing their open sides.

A firo-boxcomprising; in combinatio np a series of u ari ht unitar flexion sections inner sheetflof the front wall overlapping the short flange of eaclrhaving openside; means toefiect communication through the adjacent sides of said sections ;\and a cover sheet secured to said sections and closing their open sides.

(L -A. fire box comprising, in combination, a series of upright, unitary flexion sec 1' tions, each having an open side; a cover sheet s'ecuredfto said sections and closing their open sides; and nipples in the adjacent sides of said sections for effecting communication from one to another. I I

.-7. A fire-box comprising, in combination, a series of upright, unitary flexion sections, each having an open side; inturned flanges and a cover sheet secured, to said flanges and closing the open sides of said sections.

8. A fire-box comprising, in combination,

a series of upright, unitary flexion sections,

-10f the lower ends thereof; and amud-ring secured to said sheet and plate. H

10. In a fire-box the combination of a .wall comprising a series of upright hollowsections; and a mud-ring extending across and secured to the lower endsof said sections and having a central gutter extending'longitudinally thereof t-opro-vide a chamber comvmon to the ends of said sections for deliveringwater from one to another. a

11. In a fire-box the combmation of a wall comprising aas'erles of uprightsections; a

channel mud-ring extending longitudinally of sa d series-and having its back bent to form a gutter to provide a mud chamber beneath the lower ends of said sections.

12. In a firebox the-combination of a wall comprising a series of upright sections; a cover sheet and a plate common to said sections andprO ecting beyond the lower ends thereof, a mud-ring extending longitudinally of sald scrles and secured to saldsheet and plate, said sections communicating with one another directly above said nud-ring to form a mud chamber. I e

13. In a fire-box the combination of a series of upright, unitary sections each having a convexed flexion side and an open side;

a cover sheet secured to said sections and closing their open sides; and securing means for holding adjacent sides'of said sections against movement in the direction of the.

length of the series. I I 14:- A fire-box comprising, in combination, aflseries of upright, unitary sections, each havinga conv'exed, flexion side, an open side and flattened sides; and a cover sheet. see cured to said open sides and closing." the same.

l5, A fire-box comprising, in combination, I

i ineoec I a series of upright unitaryifle'xion sections, eaeh'qhavlng an open-side; a cover sheet secured to'saidsections and closing their open, sides; and crown drums secured to sa1dsec-.

tions andcommunicating therewith.- I V 16. A fire-box ,compr1s1ng',*1n combination,

sides; crown drums, and cups secure-dinthe upper-ends I of said sections and to said drums.v i r 17. -A fire-box comprising, in combination, :a series of uprighnunitary fleXion-sections,

each having an open side; a; cover sheet secured to said sections an d'closing their open sides; crown drums; cups secured to the upper ends of said sections and nipples in said-cups and. drums for eifecting connnuni cation from's'aid sections to said drums. I 18. In a fire-box the'combination of walls] each comprising a seriesof upright,- unitary flexionsections, each of the latter having an open side; acover sheetsecured to said sections and closing theirfopen sides; a plurality of adjoiningdrums constitutingthe crown of the fire'box; and means. providing communication from said} "walls to sa d drums. r 19. In afire-box the combination of a plurality of crown drums; and an upright end wall comprising spaced sheets having flanges at theirupper ends shaped to conform tothe contours of said drums, oneof said'fianges.

being extended to overlap the other and bearing against said drums; and means, to-

series of upright, unitary flexioir sections, each having an open side; a cover sheetse: ,cured to sa d sectionsand closing theiropen'.

securesaid flanges together and to said,

drums; 1

20. In a fire-box the combinationofaplua rality of crown drums andan upright end wall comprising spaced sheets having flanges at their upper ends'shaped to conform to the contours of said drums and projecting'away from the interior of the fire-box, oneof said, flanges being in directcontact with" said, drumsand extended to overlap the other; and means to secure said flanges together i and to said drums.

21. In a fire-box the combinationlof plu-' rality of crown drums. and ,a'n'upright end wall comprising spaced sheets having flanges V at their upper ends shaped to conform to the contours of said drums, one of said flanges being extended to overlap theother; means Y to secure saidflanges together and to said drums, said "drums and one of said fianges being apertured to permit communication between said wall and drums. I I

22. Ina fire-box the combination of a pluralityof crown drums and an upright .end

wall comprising spaced sheets having flanges at their upperends shaped toconform to the contours of said drums, one ofsaid flanges being extended to overlap the other and bearing against said drums; means to secure said flanges together an'd to said drums; and

nipples connecting one .of said-flanges with said drums for eifectingcommunication be tween the latter and said wall. "f 1 i v 23. A'boiler andits firebox comprising,

in combination, a barrel; front and back tube sheets and tubes connecting-said sheets;

, the lower ends of saidsections.

a fire. box of which the'back tube sheet constitutes the front wall; sidewalls for said fire-box eachcomprisingaplurality of upright unitary sections, each of said sections having an open sidey;"a cover sheet secured to said open sides and closing the-latter ;a

Qcrown chamber with which 5 said sections communlcate at (their upperfends and to which they are secured; and means to close 9A. In a fire-box a wall compr1singa plurality: of open sided-sections nipple'd-to gether and a cover sheet common'toand se- 'cured to a plurality, offsaid sectionss.

-. In a fire-box a wall comprising a serl fi j of sections having flattened, adjoiningfsitles secured together, andfiexion sidesfacing the interior of the fire-box and. .a cover sheet,

adj oining section of said side wall. 5 27. In a fire-boxthe combination ofi side walls comprising opensided sections,;,a{cover sheet closing the openingstherein and ex- 1 tending beyond said sections and an end" Wall comprising spaced sheets "having overlapped flange'ssecured to said cover sheet.

1 '28. In a fireboxfthe combination of a side i;- wall comprising a plurality of sections, an

end wall comprising spaced sheets having overlapped flanges and a cover sheet se- Copies of this patentmajhc obtained for five cents each, by addressing the Commissioner ofl'atents,

WashingtomD. G."

cured to said sections and to said flanges.

closed onthree sides and acover sheet clos ing the other side, crown drums secured tosaidswalls and abarrel communicating with saiddrurnsl v a:

In a locomotive fire-box, the combination of side walls comprisingsections each closed on three sides and a cover sheet closing the other side, an end wall comprising spaced sheets having overlapped flanges,

crown drums secured to' said side and end walls and a barrel communicating with said drums.

31. In a locomotive fire-box, the combina tion of side walls each comprising a plurality of open sided flexion shelled sections and a coverf sheet, for closing the open sides of thelatter, anend wall, a tube sheet, a

barrel secured thereto and crown drums communicating with each of said walls and with said'barrel.

32. In a fire-box, the combination of a series of upright sectionshaving open sides and a cover sheet common to and secured to and closing said sides, each of said sections having portions relatively ineXtensible in the direction ofthe length of said series, and a portion ex'pansible toward the interior of the fire-box. w i p i p 33. In a firebox, the combination of a series of upright sections individually exe pansible transversely thereof, and a cover sheet closing and secured directlyuto said sections. a a

34.111 a firebox, the combination of a series ofupright hollow sections having expansible sides facing the interior of the fire- A box, and a cover sheet closing and secured to the opposite sides of said sections.

35. In a firebox, the combination of a Wall comprising a series of upright hollow sec:

tions 7 having curved} expansible sides 8 facing the interiorof the fire-box and open sides opposite thereof, and a cover sheet 10 secured to said sections and closing said open sides.

In testmiony whereoffIhave signed my 1 name to this specification, in the presence of 1 29. In a locomot1vefire-boX,-, the combinai I tion of'side walls comprising sections each two subscribing witnesses.

' Witnesses:

HENRY T..WmLrAMs,\ EVERETT S. 'EMERY.

MES M, MQCLELL'QN 

